<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>CSS技术</title>
		<link rel="stylesheet" href="css/wstyust.css"/>
		<style>
			div {
				font-size:24px;
				color: orangered;
			}
			
			.tCss{
				font-size:24px ;
				color: greenyellow;
			}
			
			#fDiv{
				color: red;
				font-size: 15px;
			}
			#sDiv{
				color: black;
				font-size: 19px;
			}
		</style>
	</head>
	<body>
		<div>tykjdx智能专业</div>
		<span style="color: #FF7F00;">
			8-20位字母、数字、符号，字母开头
			</span>
			
			<h2>class选择器</h2>
			<p>段落</p>
			<p class="tCss">2段</p>
			<span class="tCss">提示</span>
			
			<h2>id选择器</h2>
			<div id="fDiv">java研发工程师</div>
			<div id="sDiv">java大数据工程师</div>
	</body>
</html>